Temporary binder.



Patented May 29, I900.

W. N. WlNF-IELD.

TEMPORARY BINDER.

(Application filed June 12, 1899.)

(No Model.)

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' UNITED STATES- YVILLIAM N. IVINFIELD, OF DETROIT, MICHIGAN.

TEM PORARY BINDER.

SPECIFICATION forming part of Letters Patent N 0. 650,805, dated May 29, 1900.

Application filed June 12, 1899. $erial No. 720,262. (No model.)

ence being had therein to the accompanying drawings.

The invention has reference to temporary or transfer binders of that particular type wherein two clamping-strips or cover-sections are adjustably united; and the invention consists in a novel construction of lock for fastening the sections securely together at various distances apart.

The invention further consists in the peculiar construction, arrangement, and combination of the various binder parts, as will be more fully hereinafter described, and shown in the drawings, in which- Figure 1 is a sectional perspective view of the binder with my improved lock attached thereto. Fig. 2 is an elevation of the bindersections or clamping-plates; and Fig. 3 is a detail perspective view of the lock, the parts being shown detached.

My invention is particularly adapted for use in connection with ledgers of the looseleaf type, and while it may be used with any type of binder it will be described as used in connection with a ledger.

The reference-letter A designates the front cover or top of the loose-leaf ledger, and B the complementary or under cover.

0 and D designate clamping plates or sections which are hinged to the covers A and B.

E and F designate back plates, the plate E being secured to and depending from the clamping-plate C and the plate F being attached to the clamping-plate D, as plainly shown in Fig. 1. These overlapping plates are adapted to slide past each other, forming a back for the book.

Fixedly secured to the clamping-plate D are three tubular post members a, b, and c, and similarly secured to the clamping-section 0 are a similar number of complementary post members d, e, and f. The several pairs of tubular post members form a plurality of extensible posts for adj ustably uniting the clamping-sections, and upon these posts are detachably secured the usual led ger-leaves A. The post members upon the lower clamping-plate D are adapted to slidingly engage over their complementary tubular members upon the clamping-section 0. By this construction the top cover may be moved to or away from the bottom cover to permit of the insertion or detachment of leaves in the book in a ready and effective manner.

In order that the two clamping-plates may be maintained at different distances apart, as may be desired in the use of the ledger, I have provided a simple and effective lock for accomplishing this result. Likewise I have so arranged the lock that it will occupy a minimum amount of space and will be entirely concealed from view, whereby a neater appearance is given to the ledger and the parts of the lock are protected from injury.

In construction my lock comprises a rod or bolt G, having one end squared, as at H, and carrying a head I at its opposite end. A screw-thread J is formed upon the bolt immediately adjacent its squared end.

K designates an expansible packing arranged upon the bolt immediately over the head I. This bolt is arranged within one of the posts which adjustably unite the clamping-plates, preferably the middle post, the bolt being arranged Within and extending entirely through and beyond the middle tubular post member e. The thread engages with a corresponding screw-thread J formed upon the interior of the post member last re ferred to near the top, and the packing is normally of a size to be readily inserted within the post member I), which telescopes over the member 6. An aperture L is formed in the clamping-plate 0 immediately above the head J, whereby the operator is enabled, by means of a suitable key placed over said squared end, to move the bolt vertically to expand the packing and clamp the post members together. By this method of construction it will be readily observed that a very simple lock has been devised which will effectively clamp the plates at such distances apart as may be required and that by arranging this look within one of the posts it not only occupies but little space, but is also entirely prw tected from injury besides, and, as before set forth, gives a better appearance to the ledger.

\Vhile I have shown the look as arranged within one of the extensible posts, it will be readily observed that such a lock may be used in all of the posts, or any single post other than the central one, although the latter is deemed the preferable. In this particular case the end posts act as guides merely for the covers or clamping-sections.

WVhat I claim as my invention is- 1. In a loose-leaf ledger, the combination of two clamping-plates, complementary tnbular post members secured one upon each plate, one of said members slidingly engaging within the other, a spindle within the inner tubular member extending through and beyond the latter, a head upon the spindle end beyond the member, and an expansible packing upon the spindle intermediate the head and the end of the inner member.

3. In a loose-leaf ledger, the combination of two clamping-plates, complementary tubular post members secured one upon each plate, one of said members slidingly engaging within the other, an actuating device arranged within and carried by the inner post member, and an expansible device, and connections between said expansible device and the actuating device whereby the former device may be expanded into engagement with the ontertubular member independent of the inner member.

In a loose-leaf ledger, the combination of an apertured clamping-plate, a rigid openended tubular post member secured to the plate andregistering with the aperture therein, a complementary clamping-plate, a oomplementary rigid tubular post member secured to the latter plate and engaging over the post member on the apertured plate, an expansible device adapted to be expanded into engagement with the outer post member, and means for expanding the said expansible device, arranged within and carried by the inner post member, substantially as described.

4. In a loose-leaf ledger, the combination with an apertured clamping-plate, an openended tubular post member secured to the plate and registering with the aperture, a complementary clampingplate, a complementary tubular post member secured to the latter plate and engaging over the post member on the apertured plate, an expansible de* vice within the outer tubular post, and an actuating device for the said expansible device, arranged within the open ended member, said actuating device having the end adapted to be operated upon extending into proximity to the aperture within the clamping-plate, substantially as and for the purpose described.

In testimony whereof I aliix my signature in presence of two witnesses.

I WILLIAM N. WIN FIELD.

\Vitnesses:

M. B. ODoennnrr', H. 0. SMITH. 

